getTimeSeries: option “withLatsLons”

24 February 2015 // by admin // getTimeSeries // Comments (0)

Add latitude and longitude coordinate to each date (line of the data frame) for the extracted time series.

> library(RWikience)
> w<-WikienceConnect()
Lookup : //localhost:8001/CWikienceRMIServer
RMI object found
> queryTimeSeries(w, "MERRA.Precipitation.Total", "01 01 1979", "01 08 2014", 12.0, -54.0, 12.0,-56.0 )
> getTimeSeriesPointsLatsLons(w)
  lat       lon
1  12 -56.00000
2  12 -55.33334
3  12 -54.66667
4  12 -54.00000
> getTimeSeriesPointCount(w)
[1] 4

Without “withLatsLons”

> t <- getTimeSeries(w, 0)
> head(t, T)
        date        value
1 1979-01-01 2.231096e-06

With “withLatsLons”

> t <- getTimeSeries(w, 0, withLatsLons = TRUE)
> head(t, T)
        date        value lat lon
1 1979-01-01 2.231096e-06  12 -56

Code used on this page:

TimeSeriesWithLatLon.R

1 file(s) 0.41 KB

Download

AIR-Q-GOV

21 February 2015 // by admin // Reports // Comments (0)

AIR-Q-GOV

Averin G.V., Rodriges Zalipynis R.A., Pollutant Emissions Inventory and Air Quality Monitoring in Ukraine – AIR-Q-GOV Report Supplement: MWH SA, La Hulpe, Belgium, 2012. – 38 pp.
PDF ~ 300 KB
Full report at www.airgovernance.eu

Hurricane Iniki

21 February 2015 // by admin // Hurricane Wind Swaths // Comments (0)

Category 4 major hurricane (SSHWS/NWS)

Formed	September 5, 1992
Dissipated	September 13, 1992

Fatalities	6 direct
Damage	$1.8 billion (1992 USD)
Areas affected	Hawaiʻi (particularly Kauaʻi)
Part of the 1992 Pacific hurricane season

iniki

PNG | GeoTIFF

Open GeoTIFF in Quantum GIS

20 February 2015 // by admin // Video Tutorials // Comments (1)

This video tutorial shows how to open a GeoTIFF file in Quantum GIS. Below is a screenshot of Quantum GIS with imported GeoTIFF for hurricane Katrina wind speed swath and OpenStreetMap layer to better perceive the geographical context.

Video tutorial importing GeoTIFF to Quantum GIS:
note: the missing value for the GeoTIFF is set to -1 what explains the step in the tutorial where we set the additional missing value.